Senior technician ( HVAC / Refrigeration / commercial Equipment Services ) Qureos Inc - 5.0 Rancho Cucamonga, CA Job Details 1 hour ago Qualifications Customer communication EPA Electrical schematic reading and interpretation Company vehicle operation Driver's License Mechanical troubleshooting Full Job Description We are currently looking for an experienced technical specialist responsible for installing, maintaining, diagnosing, and repairing complex commercial systems, including HVAC units, refrigeration systems, and commercial food service equipment. This role requires advanced troubleshooting skills, strong mechanical and electrical knowledge, and the ability to work independently in field service environments. The Senior Technician also acts as a technical leader, supporting junior technicians and ensuring high-quality service delivery across all assigned jobs. Primary Responsibilities Technical Diagnostics & Repairs Perform advanced troubleshooting on HVAC, refrigeration, and commercial equipment systems Diagnose electrical, mechanical, and control system failures using diagnostic tools and schematics Repair compressors, condensers, evaporators, motors, fans, relays, and control boards Perform refrigerant handling tasks including recovery, evacuation, leak testing, and system recharging Restore equipment such as walk-in coolers, freezers, ice machines, ovens, and other commercial appliances ⸻ Field Service Operations Respond to scheduled maintenance and emergency service calls Conduct on-site inspections, system testing, and performance evaluations Provide accurate repair recommendations to customers and management Ensure timely completion of service calls while maintaining quality standards Operate and maintain company service vehicles and tools Preventive Maintenance Perform routine inspections and preventative maintenance on equipment systems Clean, adjust, and calibrate systems to ensure optimal performance Identify potential system failures and recommend corrective actions before breakdowns occur Leadership & Training Provide technical guidance and mentorship to junior technicians and apprentices Assist in training new employees on systems, safety, and repair procedures Support team members during complex service calls or troubleshooting situations Documentation & Reporting Complete detailed service reports, work orders, and maintenance logs Document parts used, labor hours, and diagnostic findings accurately Maintain compliance records for warranties, service contracts, and inspections Communicate job status updates to dispatch or management Safety & Compliance Follow OSHA safety guidelines and company safety procedures Comply with EPA Section 608 regulations for refrigerant handling Ensure safe operation of electrical, mechanical, and pressurized systems Maintain a clean and safe work environment at all job sites Required Skills & Qualifications 5+ years of experience in HVAC, refrigeration, or commercial equipment repair Strong understanding of electrical systems and refrigeration cycles Ability to read wiring diagrams, schematics, and technical manuals EPA Section 608 Certification (or ability to obtain) Valid driver's license and clean driving record Strong problem-solving and independent working ability Preferred Qualifications Experience with commercial kitchen and food service equipment Background in low-temperature refrigeration systems Strong customer communication and service skills Experience training or supervising junior technicians Additional trade certifications in HVAC or electrical systems Work Environment Field-based position with travel to customer sites Work performed in kitchens, rooftops, mechanical rooms, and industrial facilities Exposure to varying temperatures and physical working conditions May include after-hours or emergency service calls